Add Source Generator Analyzer Rules (#1048)

Add analyzer rules for the source-generated function metadata preview

docs/analyzer-rules/AZFW0004.md

@@ -6,7 +6,6 @@
 | **Category** |[Startup]|
 | **Severity** |Error|
 
-
 ## Cause
 
 This rule is triggered when a worker extension startup type does not have a parameterless constructor.

docs/analyzer-rules/AZFW0005.md

@@ -0,0 +1,27 @@
+# AZFW0005: Multiple Azure Functions Binding Attributes grouped together
+
+| | Value |
+|-|-|
+| **Rule ID** |AZFW0005|
+| **Category** |[AzureFunctionsSyntax]|
+| **Severity** |Error|
+
+## Cause
+
+This rule is triggered when multiple Azure Functions Binding Attributes are grouped together on a method, parameter, or property syntax.
+
+## Rule description
+
+Azure Functions Binding Attributes are used to decorate a method, parameter, or property syntax. Only one binding can be associated with any syntax.
+
+## How to fix violations
+
+If you have multiple bindings on a property syntax, refactor your code to create new properties to handle the different bindings. Create only one binding per property.
+
+If you have multiple bindings on a parameter syntax, refactor your code to add new parameters to handle the different bindings. Create only one binding per parameter.
+
+If you have multiple bindings on a method, create a custom return type with the Output Binding attributes decorating the custom return type's properties. Create only one binding per property. See the documented guidance for [multiple Output Bindings](https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-process-guide#multiple-output-bindings) for more information.
+
+## When to suppress warnings
+
+This rule should not be suppressed because this error will prevent your Azure Functions from running.

docs/analyzer-rules/AZFW0006.md

@@ -0,0 +1,23 @@
+# AZFW0006: Symbol Not Found
+
+| | Value |
+|-|-|
+| **Rule ID** |AZFW0006|
+| **Category** |[AzureFunctionsSyntax]|
+| **Severity** |Warning|
+
+## Cause
+
+This rule is triggered when a Symbol necessary for Azure Function metadata generation cannot be found in the user compilation.
+
+## Rule description
+
+Symbols are searched for and loaded from the user compilation to gather Function metadata information. If the are not found, then the user's Azure Function will not run.
+
+## How to fix violations
+
+Make sure you have added all necessary imports to your compilation.
+
+## When to suppress warnings
+
+This rule should not be suppressed because this error will prevent your Azure Functions from running.

docs/analyzer-rules/AZFW0007.md

@@ -0,0 +1,23 @@
+# AZFW0007: Multiple HTTP response binding types for Azure Function
+
+| | Value |
+|-|-|
+| **Rule ID** |AZFW0007|
+| **Category** |[AzureFunctionsSyntax]|
+| **Severity** |Error|
+
+## Cause
+
+This rule is triggered when there are multiple HTTP response binding types associated with an Azure Function.
+
+## Rule description
+
+Each Azure Function can have only one HTTP response binding type.
+
+## How to fix violations
+
+Make sure you have only one HTTP response binding type associated with an Azure Function. If you have a custom return type, please check all of the properties to verify that there is only one HTTP response binding type.
+
+## When to suppress warnings
+
+This rule should not be suppressed because this error will prevent your Azure Functions from running.

docs/analyzer-rules/AZFW0008.md

@@ -0,0 +1,25 @@
+# AZFW0008: Invalid EventHubs Trigger
+
+| | Value |
+|-|-|
+| **Rule ID** |AZFW0008|
+| **Category** |[AzureFunctionsSyntax]|
+| **Severity** |Error|
+
+## Cause
+
+This rule is triggered when the EventHubs trigger of an Azure Function is invalid.
+
+## Rule description
+
+EventHubs triggers must correctly declare a compatible "IsBatched" value and parameter input type. For example, for EventHubs triggers where `IsBatched = true`, the input parameter type must be an iterable collection.
+
+_**Note:**_ The default value of IsBatched is true. If you are not explicitly providing a value, the parameter type should be a collection type.
+
+## How to fix violations
+
+If you have an EventHubs trigger where `IsBatched = true` (it is true by default), make sure your input parameter type is an iterable collection.
+
+## When to suppress warnings
+
+This rule should not be suppressed because this error will prevent your Azure Functions from running.

release_notes.md

@@ -2,3 +2,5 @@
 <!-- Please add your release notes in the following format:
 - My change description (#PR/#issue)
 -->
+
+- Add new analyzer rules for the source-generatued function metadata preview (#1048)